Valve.



E. P. ALLEN.

VALVE.

APPLIGATIQN FILED SEPTJQ, 1903.

945,433. Patented .1311.4, 1910.

f UNITED STATES PATENT oEEroE.

lever wit EVERETT P. ALLEN, CHICVAGO, ILLINOIS, ASSIGNOR TO NOBWA'LL MANUFACTURING conrm, or?` p cnrcneo, ILLINOIS.

VALVE.

Specification of Letters Patent. Patented Jan. 4, 1910.

Application vtiled September 19, 1903. Serial No. 173,756.

To all whom it my concern: n

Be it known that I, EVERETT P. ALLEN, a citizen of the United States, residing at Chicago, county of Cook, State of Illinois,

have invented a certain new and useful Imfor controlling the flow of a fluid through' a conduit, and more particularly to valves used in heating ysystems for connecting-"and disconnecting a radiator with the supply of the heating medium.

It is customary in steam and hot water heating systems to provide hand operated valves for permitting the heating medium to flow into the radiator or for cutting otf the radiator fromthe heating medium when the desired temperature of the room has been attained. Considerable diiiiculty' has been heretofore experienced in rendering the valve casing through which ythe valve operating stem extends so tight that the escape of tiuid from the system will be prevented. Packing has heretofore been necessary to close the opening in the casing through which the valve operating stem extends.

The primary object of my invention is to provide a valve for controlling the flow of iiuid through a conduit which requires no packing in order to render the same proof against leakage. A

A further object of my invention is to provide a valve for controlling the communication of a radiator with a steam heating system which will be comparatively simple in construction, inexpensive in manufacture, and efficient and durablein use.

My invention, generally described, consists in a valve casing, a valve seat within said casing, a valve adapted to engage and disengage the valve seat, a rod or lever for operating the valve extending from the exterior to the interior of the casing and longitudinally immovable with respect thereto, an enlar ement rigidly secured to the rod or lliin the casing, a surface carried by the valve casing and surrounding said rod or lever againstrwhich said enlargement at all times tightly'engages.

The drawing is a central longitudinal section of a valve arranged in accordance with a referred form of my invention.

l imilar reference characters are used to designate similar parts in the drawing.

- Reference letter A designates the valve casing which is interposed in a conduit in which water, steam or other fluid is adapted to flow.

A indicates an interiorly screw threaded coupling adapted to be united to the portion ofthe conduit from which the fluid flows, t'

while A2 indicates an exteriorly screw threaded lcolipling adapted to be connected to a conduit into lwhich theflui'diows when the 'valveis'un'sated When the valve is used for controlling the flow of a'heating medium to a radiator the coupling A2 is united to the radiator.

B3 designates a cap inscrew threaded engagement with the valve casing at aand through which the stem e3 for operating the valve extends.

E3 indicates a disk or other handle rigidly fixed to the end of the stem e3 for actuating the valve. A

C3 designates a valve located Withinv the casing and adapted to engagevwith the valve seat a1. vThe valve C3 is rigidly connected to a short rod c3 which is provided with a pin G3 extending through the same and into engagement with a spiral groove g3 formed on the interior of the cap B3. The end of the rod c3 opposite to the valve C3 is provided with a transverse pin d3 which is received within longitudinal slotsV D3 formed in the opposite Walls of the lower hollow end of the valve stem e3.

The construction above described and illustrated forms no part of my invention and its operation need not be further described than to state that a' rotation of the handle or disk E3 in either direction rotates the rod c3 and with the rod the valve C3. IVhen the valve stem e3 is rotated in one direction the pin G3 through its engagement with the spiral groove g3', lifts the valve valve stem e3 in an opposite direction forces the valve C3 against the valve seat a1 by means `of the coperating rod G3 and spiralf groove g3.

away from its seat, While the rotation of the valve stem e:s which is forced into engagement with the lower end of a sleeve H3 sur# rounding the valve stem and interposed between the enlargement Fs and the thimble b3. The enlar ment Fs is forcibly retained in contact wit the lower end of the sleeve H by means of a spring Ka which surrounds the valve stem below the enlargement thereon and bears at its upper end upon a washer 11.3 and atits lower end upon a ring la supported against downward movement by means of the inturned flange Z3 formed at the lower end of the tube L3 which in turn is screwed into the ca Bs so as to make the iiangels an adjustab e shoulder for supporting the stem.

n the embodiment of m invention above described it will be notice that the valve is seated and unseated by the rotary movement of a valve stem, such stem being at all times longitudinally immovable with respect to the ca of the valve casing through which it exten s. By providing the enlargement, which is spherical, on the'valve stem and cooperating seat within the valve easing cap, an air and fluid tight casing is made.

From the foregoing description it vwill be observed thatI have invented means for rendering a radiator or other Valve air, steam, and-water-tight without the use of gaskets or other vform of packing, thereby preventling leakage of a fluid from the valve casing around the valve actuating steam and also preventing the admission of air into the valve casin when the pressure therein is below that 'o the atmosphere.

While I have described more or less precisely the details of construction, I dofnot wish to b e understood as limiting m self thereto, as I contemplate changes in orm, the proportion of parts, and the substitution of equivalents, as circumstances may su gest or render ex dient, without departing om the spirit ofemyinvention. n

Having now fully described my invention,

what I claim as new, and desireto secure by Letters Patent, is` 4 v f 1. The combination with a valve casing, of a valve seat therein, a valve coperating with said valve seat, a rotary valve stem extending through said 'valve casing from the exterior thereof but axially immovable with res ct thereto, a. sleeve closely surrounding sai stem and'interposed between the same having a valve seat therein, of a valve cooperating with said seat, a rotary valve stem extending into said valve casing from the exterior thereof but axially immovable therein, an annular enlargement on said stem at a point within said casing, a movable member within said casing and surrounding the stem at a point beneath said enlargement, an adjustable shoulder carried by said casing beneath said member, ay sprin arranged between said member and said s oulder, a sleeve Ysurrounding said stem above said enlargement, and an adjustable cap on said casing engaging the outer end of said sleeve to hold the innerl end of said sleeve against enlargement.

In testimony whereof, I sign this specification in the presence of'two Witnesses.

EVERETT P. ALLEN.

Witnesses:

Gro. L. IVILKINsoN, CLARA C. CUNNINGHAM. 

